On September 3, 1965, the Secretary-General reported to the Security Council that between January and mid-June the UNMOGIP had verified 218 cease-fire-line violations by Pakistan and 159 by India. Since August 5, illegal activities on both sides had further increased. These activities included artillery fire, crossing the line by armed Pakistan not in uniform, and occupation by Indian troops of positions on the Pakistan side of the cease-fire line. The Secretary-General by unanimous resolution called upon both sides to stop aggression immediately and to return to their respective positions behind the cease-fire line. Instead, military activity intensified, and India invaded Pakistan in areas around Lahore and Sialkot. On September 6, the Security Council called on the parties to stop all hostilities and return their forces to positions held before August 5. The council requested the Secretary-General to assist in implementing this resolution; U Thant spent the next week in India and Pakistan arranging for a cease-fire, which became effective on September 22. The number of military observers in UNMOGIP was more than doubled, and anew temporary United Nations India and Pakistan Observation Mission (UNIPOM) was dispatched to the areas along the India and Pakistan border where Indian forces had crossed into Pakistan.